Billing and service details are managed through the client area associated with your AmpMac service. That is where you typically review invoices, due dates, account information, and any links or details attached to the service.
Depending on the product, some system-level controls may be separate from billing and account management. Use the links and instructions shown in your account as the source of truth for where a specific task belongs.
If something seems missing, first confirm you are viewing the correct service in the correct account.